Greetings!I think raptor (hawk or owl).
Reasons
1) time of day not typical for raccoon
2) birds plucked without slobbery looking (also not typical of raccoon)
3) Larger bones not consumed as typical of most larger mammals
4) Muscle looks torn from body (raptors do this most)
5) Mammals of raccoon size and larger tend to dissarticulate prey as consumed
6) Coyote / bobcat / fox would cache parts not consumed immediately so not likely any of those
I have to pretty much agree with the above assessment.
Given the time of day, it would appear to be the work of a hawk that was interrupted while feeding. If given time, a hawk will indeed strip the meat right off the bones. There is always the possibility that a vulture or crow worked on the carcass as well since both will take out the eyes.
The possums here tend to eat from the vent and consume the internal organs without much other damage.
The bobcats and coyotes leave very little behind but blood and feathers.
I have found numerous guineas with no other damage but the head and neck missing. I have always assumed the damage was done by owls. However, I had a hawk that liked to come in around 4am and dine when I had an open enclosure. Early riser I guess.
As regards a hawk being a small bird and not consuming a lot of meat at one time; I have red-tails here that approach or exceed 6 feet wingspans. They can pretty much strip a bird in a fairly short amount of time. I have seen two red-tails feeding on the same and adjacent carcasses while two others kept watch in the trees. They are exceedingly efficient predators.
I have many predators around the farm; bobcats, coyotes, possums, raccoons, skunks, numerous varieties of hawks (red-tail and marsh being about the largest I have seen), bald eagles, several varieties of owls (great horned and barred being the largest), feral and domesticated dogs, and probably a few things I haven't seen as of yet. There is over 5,000 acres of timberland wrapped around my farm, so there is no telling what is living out there.
All my fowl are very free ranging during most days and hopefully back in the enclosure at night. I do lose more than I would like.
The cycle of Life.
Take care!
Happy New Year!